ENBL+
Enable signal: ENBL+ is the positive end of direction input pin. This signal is
used for enabling/disabling the driver. High level for enabling the driver and
low level for disabling the driver.
ENBL-
ENBL- is the negative end of direction input pin. Usually left unconnected
(enabled)
2) Pins wiring diagram:
PC’s control signals can be active in high and low electrical level. When the high electrical leve
lis active, all control negative signals will be connected together to GND. When low electrical le
vel is active, all control positive signals will be connected together to public port. Now give tw
o examples( Open collector &PNP), please check them:
Fig 1. Input port circuit (Yang connection)
PC open connector output
